Vemer FHT Series User Manual page 5

• Display resolution: 0,1 °C (-9,9 ÷ +99,9 °
C) and 1 °C (< -9,9 °C and > +99,9 °C)
• Accuracy: ± 0,5 % of scale limit value ±1 digit
(at ambient temperature 23 °C)
• Sampling time: 0,5 s
• Digital confi guration of parameters:
- Set-point
- Differential
- Dead band
- Timing of output activation
- Digital-input operation and delay
- Alarm/Buzzer start delay
- Probe calibration OFFSET
- Reading Resolution
- Temperature measurement unit
- Measurement display fi lter (update speed)
- Type of probe input
- Password
- Operation mode (regulation):
— ON/OFF Direct and/or Reverse action with or without Dead Band
— PWM, Direct, Reverse and Dead Band action
— ALARM
— Cooling Mode
— Special Mode
• 2 independent set-points
• Outputs: 1 or 2 changeover contact relays 8A/250 V AC1
• Analog output (excluding model FHT NTC): 0 ÷ 10 V
(applicable for power supply >/=15 V AC/DC), 4 ÷ 20 mA
• Optoisolated serial communication output RS 485 (MODBUS communication protocol)
• Digital input: 1 with confi gurable-function external consent external alarm, ON/OFF
regulation, selection of probe to be displayed, set-point switching, Direct/Reverse
switching,...)
• Acoustic and visual alarm system for: external alarm (from digital input), probe alarm
(malfuction), minimum or maximum alarm
• Infrared receiver with RC-5 protocol (excluding model FHT NTC-2DA) for remote-
control (accessory available separately for remote programming)
• Available for models with: backboard mounting 33x75mm and 4 DIN modular
mounting
• Power supply: See table on next page
• Nominal power: 3VA for 33x75 backboard-mounting models 4,5 VA for 4 DIN
modular-mounting models
• Max. power input: 100 mA at 12 V; 50 mA at 24 V (1 channel)
• Operating Temperature: 0 ÷ +50 °C
• Operating humidity: <80%
• Storage Temperature: -10 ÷ +70 °C (<80% RH)
• Protection degree: front IP54 (IP40 for 4 DIN model)
terminals IP20
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User Manual – Thermoregulator FHT